diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 1b02bb8..be00e6c 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -8,17 +8,22 @@ on:
   workflow_dispatch:
 
 jobs:
-  tests:
+  tests-3x:
     name: "Python ${{ matrix.python-version }}"
     runs-on: "ubuntu-latest"
 
     strategy:
       matrix:
-        python-version: ["2.7", "3.9"]
+        python-version:
+        - "3.8"
+        - "3.9"
+        - "3.10"
+        - "3.11"
+        - "3.12"
 
     steps:
-      - uses: "actions/checkout@v2"
-      - uses: "actions/setup-python@v2"
+      - uses: "actions/checkout@v3"
+      - uses: "actions/setup-python@v4"
         with:
           python-version: "${{ matrix.python-version }}"
       - name: "Install dependencies"
@@ -28,8 +33,23 @@ jobs:
           python -m pip install -e .[dev]
       - name: "Run tests for ${{ matrix.python-version }}"
         run: python -m pytest
+      - name: Upload coverage to Codecov
+        uses: "codecov/codecov-action@v3"
+
+  tests-27:
+    name: "Python 2.7 on ubuntu-20.04"
+    runs-on: ubuntu-20.04
+    container:
+      image: python:2.7-buster
 
+    steps:
+      - uses: "actions/checkout@v3"
+      - name: "Install dependencies"
+        run: |
+          set -xe
+          python -VV
+          python -m pip install -e .[dev]
+      - name: "Run tests for 2.7"
+        run: python -m pytest
       - name: Upload coverage to Codecov
-        uses: "codecov/codecov-action@v1"
-        with:
-          fail_ci_if_error: true
+        uses: "codecov/codecov-action@v3"
diff --git a/luddite.py b/luddite.py
index 40d08cc..d8cc1b4 100755
--- a/luddite.py
+++ b/luddite.py
@@ -8,10 +8,9 @@
 import subprocess
 import sys
 from concurrent.futures import ThreadPoolExecutor
-from pkg_resources import parse_version
-from pkg_resources import Requirement
-from pkg_resources import RequirementParseError
 
+from packaging.requirements import Requirement, InvalidRequirement
+from packaging.version import Version
 
 try:
     from urllib2 import Request, urlopen
@@ -97,7 +96,7 @@ def get_data_pypi(name, index=DEFAULT_INDEX):
 
 def get_versions_pypi(name, index=DEFAULT_INDEX):
     data = get_data_pypi(name, index)
-    version_numbers = sorted(data["releases"], key=parse_version)
+    version_numbers = sorted(data["releases"], key=Version)
     return tuple(version_numbers)
 
 
@@ -123,7 +122,7 @@ def get_data_devpi(name, index):
 
 def get_versions_devpi(name, index):
     data = get_data_devpi(name, index)
-    version_numbers = sorted(data["result"], key=parse_version)
+    version_numbers = sorted(data["result"], key=Version)
     return tuple(version_numbers)
 
 
@@ -195,14 +194,14 @@ def __init__(self, text, line_number=None):
         self.from_versions = ""
         if self.stripped:
             try:
-                self.req = Requirement.parse(self.stripped)
-            except (RequirementParseError, ValueError):
+                self.req = Requirement(self.stripped)
+            except (InvalidRequirement, ValueError):
                 pass
             else:
-                if len(self.req.specs) == 1:
-                    [(op, v)] = self.req.specs
-                    if op == "==":
-                        self.version = v
+                if len(self.req.specifier) == 1:
+                    spec = str(self.req.specifier)
+                    if spec.startswith("=="):
+                        _, self.version = spec.split("==", 1)
         self.error = None
         self.latest = None
         self.latest_non_pre = None
@@ -236,7 +235,7 @@ def process(self, worker, index=None):
             return "gone"
         self.latest = index_versions[-1]
         self.latest_non_pre = max(
-            index_versions, key=lambda v: (not parse_version(v).is_prerelease, parse_version(v))
+            index_versions, key=lambda v: (not Version(v).is_prerelease, Version(v))
         )
         if self.version == self.latest:
             return "pass"
diff --git a/setup.py b/setup.py
index 7f5ed10..0f35371 100644
--- a/setup.py
+++ b/setup.py
@@ -2,7 +2,7 @@
 
 setup(
     name="luddite",
-    version="1.0.2",
+    version="1.0.3",
     author="Wim Glenn",
     author_email="hey@wimglenn.com",
     url="https://github.com/jumptrading/luddite",
@@ -18,14 +18,14 @@
     ],
     entry_points={"console_scripts": ["luddite=luddite:main"]},
     install_requires=[
-        "setuptools >= 18.0",
+        "packaging",
         'colorama; platform_system == "Windows"',
         'futures; python_version < "3.2"',
     ],
     extras_require={
         # https://hynek.me/articles/conditional-python-dependencies/
         "dev": [
-            "pytest>=3.6.3",
+            "pytest >= 3.6.3",
             "pytest-cov",
             "pytest-mock",
             "pytest-socket",